65390689 has 8 divisors (see below), whose sum is σ = 80480960. Its totient is φ = 51737616.

The previous prime is 65390681. The next prime is 65390783. The reversal of 65390689 is 98609356.

65390689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65390689 - 2³ = 65390681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65390681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359199 + ... + 359380.

It is an arithmetic number, because the mean of its divisors is an integer number (10060120).

Almost surely, 2^65390689 is an apocalyptic number.

It is an amenable number.

65390689 is a deficient number, since it is larger than the sum of its proper divisors (15090271).

65390689 is a wasteful number, since it uses less digits than its factorization.

65390689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718599.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 65390689 is about 8086.4509520555. The cubic root of 65390689 is about 402.8765330570.

The spelling of 65390689 in words is "sixty-five million, three hundred ninety thousand, six hundred eighty-nine".